Page 65 - Basics of Electrical, Electronic and Communication

17.7. General packet Radio Service (GPRS) 347

2. Write RADAR equation. (1 mark)

3. What is meant by frequency reuse technique ? (2 marks)

Part B
Answer any two questions

4. Explain briefly about various noises in amplifier.

5. Simplify the following Boolean Expression an implement using
only NAND gates. (2 marks)

Y = A B.C + A B C + A B C + ABC

6. Explain the principle of GSM. (2 × 5 = 10 marks)

Part C

7. (a) i. Explain the concept of differential amplifier. (5
marks)
ii. Compare TTL and CMOS logic (3 marks)
iii. List the characteristics of Op-Amp. (2 marks)

or

(b) Explain the working of CRO with neat block diagram.
(10 marks)
8. (a) Draw the block diagram of superheterodyne receiver and
explain. (10 marks)

or

(b) i. Explain the basic principle of cellular communica-
tion.
(5 marks)
ii. Write short note on GPRS technology. (2 marks)

347